You have a great turntable and cartridge. You ask a great question.
The phono stage has a huge impact on the sound you get from the turntable / cartridge. I would recommend an Audio Research PH-8 or higher…there is a PH-9, Also a level up I have the Reference 3 and Reference 3SE. I have had Audio Research phono stages for over thirty years… to me, they are the standard to judge others. Incredibly natural, dynamic, quiet. I have been using a Reference 3 and 3SE for the last few years, but the PH8 and beyond have been simply stunning.
Anyway, I highly recommend the highest level Audio Research you can get used.